Vehicle target speed change measuring method and system based on millimeter wave radar

• Main Authors: LEI PENG, WANG JUN, XU MAI, LI YONGSU
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a vehicle target speed change measuring method and system based on a millimeter wave radar, and relates to the technical field of digital signal processing. The method comprises the following steps: step 1, generating an LFMCW signal; step 2, signal transmission is carried out through a wireless transceiver unit; step 3, obtaining an intermediate frequency signal; 4, extracting a slow time signal sequence; and 5, measuring the target speed variation of the vehicle. The system comprises a signal generation unit, a wireless transceiving unit, a signal dechirp unit, a signal correction unit and a speed variation measurement unit. According to the invention, high-precision and real-time measurement of the speed variation of the front vehicle is realized, and the speed variation of the front vehicle and other information are fused and decided, so that a driver or an automatic driving system is helped to take necessary reasonable measures, and the driving safety is improved. 本发明公开了一种基于毫米波雷达的